the planets

12345678
Across
  1. 3. Thicker atmosphere
  2. 5. Most habitable planet
  3. 6. Double the mass of every other planet
  4. 8. Super sonic winds
Down
  1. 1. Visited by Voyager 2
  2. 2. Most moons
  3. 4. Closest to the sun
  4. 7. Doesn't have any moons